Metric Worms, Worm Gears Module 6

Quality Transmission is the largest North American supplier of off-the-shelf metric gearing.

Specifications
Catalog No.	SW	BG	CG
Precision grade	KHK W 001 grade 4	KHK W 002 grade 4	KHK W 002 grade 4
Reference section of gear	Normal plane	Normal plane	Normal plane
Gear teeth	JIS 3 type Standard full depth	Standard full depth	Standard full depth
Normal pressure angle	1430'	1430'	1430'
Material	S45C (Carbon steel)	PBC2 and BC6 (Bronz)	FC200 (Gray iron)
Heat treatment	-	-	-
Surface hardness	Less than 194	-	-
Surface treatment	Black oxide	-	-
Surface finish	Cut	Cut	Cut
Datum reference surface for gear cutting	Bore	Bore	Bore


W3	H1

H2	HB

Module 6 Worms

Catalog No.	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width (R)	Hub width (L)	Total length	Screw		Shape	Weight (kgf)
Catalog No.	Number of start	Hand of thread	L_H7	M	N	O	P	Q	Q'	R	Size	S	Shape	Weight (kgf)
SW6-R1 [ DXF \| DWG \| 3D CAD] SW6-R2 [ DXF \| DWG \| 3D CAD]	1 2	R R	30 30	64 64	80 80	92 92	100 100	25 25	25 25	150 150	- -	- -	W3 W3	4.3 4.3

Catalog No. Number of
start Hand of
thread Bore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L) Total length Screw Shape Weight
(kgf)

L_H7 M N O P Q Q' R Size S

SW6-L1
[ DXF | DWG | 3D CAD]
SW6-L2
[ DXF | DWG | 3D CAD] 1

2

L

L

30

30

64

64

80

80

92

92

100

100

25

25

25

25

150

150

-

-

-

-

W3

W3

4.3

4.3

Lead Angle R1(L1) 418' R2(L2) 838'

Module 6 Worm Gears

Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Throat dia.	Outside dia.	Face width	Hub width	Total length	Mounting distance	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	A_H7	B	C	D	D'	E	F	G	J	Shape	Surface durability	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
BG6-20R1 [ DXF\|DWG \| 3D CAD] BG6-20R2 [ DXF\|DWG \| 3D CAD]	1/20 1/10	20 20	-0.026 -0.104	1 2	R R	25 25	100 100	120.34 121.38	132 132	136 136	52 52	20 20	72 72	100 100	H1 H1	7.04 6.64	69.08 65.15	0.270.37 0.270.37	6.1 6.1	BG6-20R1 BG6-20R2

Catalog No. Reduction
ratio No. of
teeth Coefficient of
profile shift Number of
start Hand of
thread Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width Total length Mounting
distance Shape Allowable
torque (kgfm) Allowable
torque (Nm) Backlash
(mm) Weight
(kgf) Catalog No.

A_H7 B C D D' E F G J Surface
durability Surface
durability

BG6-20L1
[ DXF|DWG | 3D CAD]
BG6-20L2
[ DXF|DWG | 3D CAD] 1/20

1/10

20

20

-0.028

-0.114

1

2

L

L

25

25

100

100

120.34

121.38

132

132

136

136

52

52

20

20

72

72

100

100

H1

H1

7.04

6.64

69.08

65.15

0.270.37

0.270.37

6.1

6.1

BG6-20L1

BG6-20L2

Module 6 Worm Gears

Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	Bore	Hub dia.	Pitch dia.	Throat dia.	Outside dia.	Face width	Hub width (R)	Hub width (L)	Total length	Web thickness	Web O.D.	Mounting distance	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	Reduction ratio	No. of teeth	Coefficient of profile shift	Number of start	Hand of thread	A_H7	B	C	D	D'	E	F	F'	G	H	I	J	Shape	Surface durability	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
CG6-20R1 [ DXF\|DWG \| 3D CAD] CG6-20R2 [ DXF\|DWG \| 3D CAD] CG6-30R1 [ DXF\|DWG \| 3D CAD] CG6-30R2 [ DXF\|DWG \| 3D CAD] CG6-40R1 [ DXF\|DWG \| 3D CAD]	1/20 1/10 1/30 1/15 1/40	20 20 30 30 40	-0.028 -0.114 -0.012 -0.172 -0.057	1 2 1 2 1	R R R R R	25 25 25 25 25	100 100 100 100 100	120.34 121.38 180.51 182.06 240.68	132 132 192 192 252	136 136 196 196 256	52 52 52 52 52	20 20 20 20 20	- - - - -	72 72 72 72 72	- - 15 15 15	- - 155 155 213	100 100 130 130 160	H1 H1 HB HB H2	7.04 6.64 15.57 14.68 23.37	69.08 65.15 152.7 144 268.4	0.270.37 0.270.37 0.270.37 0.270.37 0.270.37	5.1 5.1 7.6 7.6 10	CG6-20R1 CG6-20R2 CG6-30R1 CG6-30R2 CG6-40R1
CG6-50R1 [ DXF\|DWG \| 3D CAD] CG6-50R2 [ DXF\|DWG \| 3D CAD] CG6-60R1 [ DXF\|DWG \| 3D CAD]	1/50 1/25 1/60	50 50 60	-0.071 -0.286 -0.085	1 2 1	R R R	25 25 25	100 100 120	300.85 303.44 361.02	312 312 372	316 316 376	52 52 52	20 20 20	- - -	72 72 72	16 16 17	275 275 336	190 190 220	H2 H2 H2	42.02 40.3 59.37	412.1 395.3 582.3	0.270.37 0.270.37 0.270.37	13 13 19	CG6-50R1 CG6-50R2 CG6-60R1

Catalog No. Reduction
ratio No. of
teeth Coefficient of
profile shift Number of
start Hand of
thread Bore Hub dia. Pitch dia. Throat dia. Outside dia. Face width Hub width (R) Hub width (L) Total length Web
thickness Web O.D. Mounting
distance Shape Allowable
torque (kgfm) Allowable
torque (Nm) Backlash
(mm) Weight
(kgf) Catalog No.

A_H7 B C D D' E F F' G H I J Surface
durability Surface
durability

CG6-20L1
[ DXF|DWG | 3D CAD]
CG6-20L2
[ DXF|DWG | 3D CAD]
CG6-30L1
[ DXF|DWG | 3D CAD]
CG6-30L2
[ DXF|DWG | 3D CAD]
CG6-40L1
[ DXF|DWG | 3D CAD] 1/20

1/10

1/30

1/15

1/40

20

20

30

30

40

-0.028

-0.114

-0.012

-0.172

-0.057

1

2

1

2

1

L

L

L

L

L

25

25

25

25

25

100

100

100

100

100

120.34

121.38

180.51

182.06

240.68

132

132

192

192

252

136

136

196

196

256

52

52

52

52

52

20

20

20

20

20

-

-

-

-

-

72

72

72

72

72

-

-

15

15

15

-

-

155

155

213

100

100

130

130

160

H1

H1

HB

HB

H2

7.04

6.64

15.57

14.68

23.37

69.08

65.15

152.7

144

268.4

0.270.37

0.270.37

0.270.37

0.270.37

0.270.37

5.1

5.1

7.6

7.6

10

CG6-20L1

CG6-20L2

CG6-30L1

CG6-30L2

CG6-40L1

CG6-50L1
[ DXF|DWG | 3D CAD]
CG6-50L2
[ DXF|DWG | 3D CAD]
CG6-60L1
[ DXF|DWG | 3D CAD] 1/50

1/25

1/60

50

50

60

-0.071

-0.286

-0.085

1

2

1

L

L

L

25

25

25

100

100

120

300.85

303.44

361.02

312

312

372

316

316

376

52

52

52

20

20

20

-

-

-

72

72

72

16

16

17

275

275

336

190

190

220

H2

H2

H2

42.02

40.3

59.37

412.1

395.3

582.3

0.270.37

0.270.37

0.270.37

13

13

19

CG6-50L1

CG6-50L2

CG6-60L1

*CAUTION:*	Before assembling or performing any secondary operations, please carefully read the "Application Hints" at the beginning of this section.
*CAUTION:*	These worm gears are profile shifted to create the proper center distance.
*CAUTION:*	H2 type worm gears have cast lightening holes in the web.
*NOTE:*	Allowable torques shown in the table are the calculated values according to JGMA Standards 405-01 when the worm is rotating at 600 rpm, The table below shows the allowable worm gear torques at selected worm speeds.
*NOTE:*	The items listed above as are available from stock until current inventory is exhausted. At that time the product will only be available on a made to order custom basis.

BG6 Allowable Worm Gear Torques(kgfm)

Catalog No.	Worms rpm
Catalog No.	30	100	300	600	900	1200
BG6-20R1 BG6-20R2	14.17 14.36	11.32 11.17	8.79 8.34	7.04 6.64	6.07 5.65	5.43 5.02

CG6 Allowable Worm Gear Torques(kgfm)

Catalog No.	Worms rpm
Catalog No.	30	100	300	600	900	1200
CG6-20R1 CG6-20R2 CG6-30R1 CG6-30R2 CG6-40R1 CG6-50R1 CG6-50R2 CG6-60R1	14.17 14.36 29.94 30.54 51.24 77.45 78.92 108.4	11.32 11.17 24.21 24.30 41.48 62.76 63.19 88.24	8.79 8.34 19.07 18.42 33.17 50.60 49.73 71.22	7.04 6.64 15.57 14.68 27.37 42.02 40.30 59.37	6.07 5.65 13.47 12.70 23.72 36.68 34.64 52.36	5.43 5.02 12.01 11.24 21.23 32.96 31.06 46.91

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